Adjustable eccentric motion



F. A. LANE ADJUSTABLE ECCENTFIC MOTION Original Filed Aug. 15, 1947'March 24, 1953 Patented Mar. 24, 1953 y ADJUSTABLE ECCENTRIC MOTION FredA. Lane, Shelburn, Ind., assigner to Lane Motors, Incorporated, TerreHaute, Ind., a corporation of Indiana Original application August 15,1947, Serial No. 768,803. Divided and this application January 2, 1951,Serial No. 203,964

3 Claims.

The present invention relates to an adjustable eccentric motion, and theprimary object thereof is to provide novel means whereby the degree ofeccentricity of a rotary driver may be varied by a simple adjustment. Afurther object of the invention is to make such adjusting means of suchcharacter as to be actuable during operation of the mechanism.

The invention finds its primary utility when used as a part of a motionconverter for changing rotary movement into reciprocatory or oscillatorymovement, and comprises means whereby the throw of the rotary inputmechanism of such an assembly may be adjusted during operation.

The present application is a division of my copending application SerialNo. 768,803, filed August l5, 1947, now Patent No. 2,564,982, forOscillator Drive Mechanism.

Additional objects of the invention will appear as the descriptionproceeds.

To the accomplishment of the above and related objects, my invention maybe embodied in the form illustrated in the accompanying drawings,attention being called to the fact, however, that the drawings areillustrative only and that change may be made in the specic constructionillustrated and described, so long as the scope of the appended claimsis not violated.

Fig. l is a vertical section through mechanism embodying the presentinvention;

Fig. 2 is a sectional view taken from the righthand sideof Fig. 1;

Fig. 3 is a view similar to Fig. l and showing the parts in a differentposition of adjustment;

Fig. 4 is a horizontal section taken substantially on the line 4 4 ofFig. 3; and

Fig. 5 is a similar section taken substantially on the line 5-5 of Fig.3.

Referring more particularly to the drawings, it will be seen that I haveillustrated a housing I formed with an integral top wall II and an openbottom adapted to be closed by a cover plate 8 suitably secured to thehousing I0 by machine screws 9, or the like, with an intervening gasket,if desired, to make the housing liquidtight, whereby the parts to bedescribed may, if desired, run immersed in lubricant.

An opening I2 in the housing wall II may mount a bushing or bearing I3in which is journalled a shaft I4 carrying, within the housing, a wormgear I5 with which meshes a worm I6 on a power input shaft suitablyjournalled in the housing and driven by any desired power means.

Within the housing I0, the shaft I4 carries or is provided with, acylindrical stem I8 upon which 2Y is mounted a ring I9, rotationally xedto said stem, but capable of sliding axial movement relative thereto.The ring I9 is formed with an outwardly opening peripheral groove 20.Suitably journaled in a bore 2| in the housing, upon an axis parallelwith the axis of the shaft I4, is an adjusting shaft 22 carrying a stopcollar 23 and having a threaded section 24 upon which is threadedlymounted a yoke 25 Whose oppositely projecting arcuate fingers areoperatively received in the groove 20 of the ring I9.` It Will beobvious, particularly from an inspection of Fig. 2, that rotationaladjustment of the shaft 22 in opposite directions will shift the ring I9axially oppositely relative to the stem I8.

A rocker 26 is socketed inthe ring I9 upon an axis tangential to acircle concentric with the shaft i4, and a pin 21 projects radially fromsaid rocker. The structure permits oscillation of the rocker 25 and pin21 in a plane including the axis of the shaft I4 and stem I8. A secondrocker 28 is socketed in the stem I8 upon an axis parallel with the axisof the rocker 26 and perpendicularly intersecting the axis of the stemI8. Said rocker 28 is formed with a transaxial bore 29 therethrough,slidably receiving the projecting end of the pin 21. Radially projectingfrom the rocker 28, in the plane of the axis of the pin 21, butangularly related thereto is a pin 30.

The stem I8 carries, at its lower end, a block 3| formed with a guideway32 which extends transaxially of the stern I8; and a block 33 isreciprocably mounted in said guideway. A rocker 34 is socketed in saidblock 33 for oscillation upon an axis parallel to the axes ofoscillation of the rockers 28 and 28. The rocker 34 is formed with atransaxial bore 35 slidably receiving the projecting end of the pin 3B.

It will be readily perceived that, as the ring I9 is moved downwardlyfrom its illustrated position, the rockers 26 and 28 will be turned in aclockwise direction, the pin 31 sliding farther into the bore 29;whereby the pin 30 Will be bodily shifted in a clockwise direction,about the axis of the rocker 28, will slide farther into the bore 35,and will bodily shift the block 33 toward the left, concurrently turningthe rocker 34 in a clockwise direction in its socket.

The block 33 is socketed to receive a trunnion pin 36 which projectsdownwardly therefrom, through a slot 36 opening downwardly from theguideway 32, the axis of said trunnion being parallel with the axis ofthe shaft I4. The parts are so proportioned and designed that, when thering I9 has been moved downwardly to the .limit 3 of its stroke, theaxis of the trunnion pin 36 will coincide with the axis of the shaft I4.

The trunnion pin is fixed relative to the block 33 by a machine screw31, or the like, preferably projecting into a socket suitably formed insaid pin. Its downward extension forms a pivotal mounting for one end 38of a pitman 39. If desired, a bushing may surround the pin 3'6 in theeye of said pitman end, and the pitman end may be held in place on thetrunnion pin by a cotter pin '40, or the like, a washer preferably beinginterposed between said Cotter pin and the pitman end 38.

It will thus be seen that I have provided a mechanism whereby, throughmanipulation of the shaft 22, and Whether or not the shaft I4 is ismotion, the degree of eccentricity of the trunnion 36 relative to theshaft lli may be adjusted from a zero value to any selected value Withinthe dimensions of the block .'3 I

I claim as my invention:

. l. In combination, a rotor, a transaxial guide- Way xed to said rotor,an element guided for movement in said guidevvay and provided with aconnector, a member rotationally fixed but axially movably mounted onsaid rotor, a rocker carried by said element for oscillation upon anaxis normal to a plane including the rotor axis and the, line ofmovement of said element, a second rocker carried'by said rotor foroscillation upon an axis parallel With the axis of said iirstnamedrocker and intersecting said rotor axis, a third rocker carried by saidmember for osci. lation about an axis parallel with the axes of saidfirstand second-named rockers, a pin joining said rstand second-namedrockers with its axis'perpendicular to the axes of said joined rockersand having a transaxially slidable connection with one of the joinedrockers, and a pin joining said second and third rockers with its axis,perpendicular to the axes of said joined rockers and having atransaxially slidable connection with one of the joined rockers.

2. The organization of claim 1 including means movably mounted adjacent,said rotor and oper atvely associated with said member for axiallyshifting said member during rotation thereof.v

3. Inv combination, a rotor, a transaxial guide- WayI fixed to said`rotor, anV element guided for recinrocatory movement in said. guidewayand provided with a connector, said element having formed therein a.cylindrical seat with its axisy transverse to the line of movement ofsaid element, a cylindrical rocker retained in said seat againsttransaxial movement relative to said element, said rocker beingrformedwith a transaxial bore, the axis of said rocker being arranged normal toa plane including the axis of said rotor, and said seat having aperipherally-elongated radial opening therefrom registering with saidrocker bore, said rotor being formed with a cylindrical seat Whose axisperpendicularly intersects said rotor axis and is parallel with saidrocker axis, a second cylindrical rocker retained in said rotor seatagainst transaxial movement relative to said rotor, said second rockerbeing provided With a radial socket, and said rotor seat being providedWith a peripherally-elongated radial opening therefrom registering Withsaid socket, a pin seated in said socket, traversing said openings andslidably received in said bore, said second rocker further beingprovided with a transaxial bore angularly related to said socket andregistering with said rotor seat opening, a member rotationally 'fixedbut axially movably mounted on said rotor, said member being providedWith a cylindrical seat with its axis parallel with the axes of saidelement seat and said rotor seat and having a peripherally-elongatedradial opening therefrom registering with said rotor opening, a thirdcylindrical rocker retained in said member seat against transaxial move`ment relative to said member and provided with a radial socketregistering with said member seat opening, a pin seated in said thirdrocker socket,c traversing said member seat openining and said rotorseat opening and slidably received in said second rocker bore, and meansfor shifting said member axially relative to said rotor.

FRED A. LANE. 4

REFERENCESv CTED The following references are of record in the le ofthis patent;

UNITED STATES PATENTS' Number Name Date.

2 ,il-33,639 Lottsv Mar. 10,. 1%6A FOREIGN PATENTS- Number Country Date325,915 Germany Sept. 20, 1920 246,644 Great Britain Feb. 4, 1926

